JPH0326820Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a mounting structure for corrugated sheets used as building materials.

(Prior art) Corrugated sheets used for agricultural gardening greenhouses, stockpiling greenhouses, and other buildings are manufactured by continuous extrusion molding of synthetic resin materials such as vinyl chloride resin and polycarbonate. etc. are manufactured to be constant. Conventionally, this type of corrugated plate has ridges 1 and troughs 2 at regular intervals, as shown in Fig. 7.
The depth H of the valley was the same in each valley part 2. In addition, when constructing the above-mentioned corrugated sheet A as a roofing material for a building, for example, each end of two corrugated sheets A, A arranged adjacently as shown in the same figure is They are overlapped and connected so that the two troughs 2 and 2 overlap each other. In this case, the overlap margin is set to about 1.5 to 2.5 peaks. In such a joint construction, two corrugated sheets A, A are overlapped and connected because rainwater flowing inside the troughs 2 of corrugated sheet A occurs at the overlapped connection part A of the two corrugated sheets A, A. This is to prevent water from leaking into the room through the gaps between them.

However, corrugated sheets are supplied according to JIS standards, and the depth H of the troughs is shallow, for example, 8 to 9 mm for corrugated sheets classified as 32 waves, so if there is a lot of rainfall, the depth H of the valley is shallow. The amount of rainfall easily exceeds the drainage capacity of the valley 2. When that happens,
Since the water level W of rainwater flowing through the overlapped joint A becomes higher than the highest point P of the gap as shown in Fig. 7, the rainwater intrudes into the gap and leaks into the room. .

(Problems to be solved by the invention) The invention was made with the aim of preventing water from leaking into the room from the overlapped joints even when the amount of rainfall is relatively large. The problem to be solved is to prevent water from leaking from the overlap joint into the room even when the main rainfall exceeds the drainage capacity in the valleys of the parts other than the overlap joint when it is attached to the main building material. It is said that

(Means for solving the problem) A means for solving the above problem is that the depth of the valley at both ends in the width direction is deeper than the depth of the valley at the middle part, and the depth of the valley at both ends and the middle part in the width direction is deeper. The lowest point of each trough in the corrugated plate is set at the same level so that the lowest point of each trough is located on a common virtual plane, and the lowest point of each trough is supported by the purlin material.

(Function) According to the above means, the drainage capacity of the troughs at both ends is greater than the drainage capacity of the troughs at the middle part in the width direction, and water overflows from the troughs at both ends in the width direction that are overlapped and connected. The water level at this time is higher than the water level when water overflows from the middle valley, so even if there is rainfall that exceeds the drainage capacity of the middle valley, it will immediately drain the valleys at both ends. It is not always the case that rainwater will flow into a certain area in excess of its drainage capacity. Therefore, if the depth of the troughs in the intermediate portion is set to a specified depth as in the conventional corrugated sheet, and the depths of the troughs in the troughs at both ends are set to be deeper than that. According to the conventional corrugated plates, water leakage from the overlapping joints of the corrugated plates is prevented even if there is a rain that cannot avoid water leakage.

(Example) The corrugated plate B illustrated in FIG. 1 has peaks 11 and troughs 12.
It has two tall peaks 11a, 11a at one end in the width direction. And the valley part 12 sandwiched between these tall peak parts 11a, 11a.
In the case of a, the depth H ₂ of the valley is deeper than the depth H ₁ of the valley 12 in the middle portion thereof. Further, the other end of the corrugated sheet B in the width direction is similarly provided with two tall peaks 11b, 11b, and the depth of the valley 12b between them is the same as the depth _H2 . There is. On the other hand, the mountain portions 11 at both ends
The pitch P ₂ of a and 11b is the same as the pitch P ₁ of the mountain portion 11 in the middle portion thereof. moreover,
The lowest points of each valley portion 12, 12a, 12b are set at the same level so as to be located on a common virtual plane XX.

When constructing such a corrugated sheet B as a roofing material, for example, as shown in FIG. These two corrugated plates B are overlapped and connected so that one peak 11a at the end of the corrugated plate B and one peak 11b at the other end of the other corrugated plate B overlap,
Valley portions 12, 12 at both ends and the middle portion, respectively.
The lowest points of a and 12b are supported and attached to a purlin material (not shown).

When the corrugated sheet B is added and constructed in this way, the depth of the valley portion 12a at the lap connection portion A is deeper than the depth of the valley portion 12 at other portions, so its drainage capacity is large; Moreover, Tanibe 12
The water level when overflowing a is higher than the water level when overflowing the valley 12. Therefore, even if it rains to the extent that the valleys 12 are filled with rainwater flowing through them at locations other than the overlap joint A, the valleys 12a at the overlap joint A will not be filled with rainwater, and moreover, Overflow of rainwater from the valleys 12 at locations other than the connection A to the valleys 12a of the overlap connection A is unlikely to occur, so the water level is the highest in the gap between the two corrugated plates B and B at the overlap connection A. It never rises higher than point _P1 , and therefore water does not leak into the room through the gap due to the rain. In addition, the overlapping connection portion, which conventionally requires two overlapping connections, can be replaced with one overlapping connection portion as shown in the figure, and the amount of material can be reduced.

In addition, even though the corrugated plate B described above has different valley depths at both ends and the middle part in the width direction,
As explained in FIG. 1, each valley 12, 12a, 1
Since the lowest point of 2b is set at the same level, all valleys 1
2, 12a, 12b can be supported and construction can be carried out without wobbling.

The corrugated plate may have a shape other than those described above. For example, as shown in FIG. 3, it has one tall peak 11a at one end in the width direction,
The other end may have two tall peaks 11b. In this case as well, the depth H ₂ of the valleys at both ends of the corrugated plate B is deeper than the depth H ₁ of the valleys at the intermediate portion. In addition, when constructing the corrugated sheet B shown in Fig. 3, in two adjacent corrugated sheets, one end of the other corrugated sheet is attached to the peak 11b on the outside of the height of the other end of one corrugated sheet. It is necessary to overlap the tall peaks 11a.

In addition to the shapes described above, the shape of the corrugated plate may be
As shown in the figure, the corrugated plate B may have three tall peaks 11a and 11b at both ends, respectively. In this case as well, the depth of the valleys at both ends of the corrugated plate B is deeper than the depth of the valleys at the middle part.

Furthermore, as shown in FIG. 5, the pitch _P2 of the tall peaks 11a, 11b at both ends of the corrugated sheet B may be made wider than the pitch _P1 of the peaks 11 in the middle. In this case, since the peaks 11a and 11b are tall, the drainage capacity of the joint A can be increased without reducing the rigidity, and the risk of water leakage can be further reduced.

In the corrugated sheet B explained in Fig. 1, Fig. 3, Fig. 4, and Fig. 5, the tall ridges overlap each other during the joint construction, so the overlapped joints are more difficult than in the conventional case. In addition to reliable joining, the rigidity of each corrugated sheet B is increased by the rib effect of the tall peaks 11a and 11b, resulting in a corrugated sheet with so-called "stiffness." From this, there is an advantage that the installation interval of the purlins for supporting the corrugated sheets can be made wider than in the conventional case.

Furthermore, as shown in FIG. 6, the depth of the valleys at both ends of the corrugated plate B' may be gradually deepened. The depth of the trough on one side of the corrugated sheet B' is set to the same depth _H1 as the depth H of the trough of the conventional corrugated sheet A in both the intermediate part and both ends, so that it can be connected to the conventional corrugated sheet A. The other side of the corrugated plate B′ has a tall peak 11 with a valley depth H ₂ at both ends.
a and 11b, and the intermediate portion is a peak portion 11a having a valley depth _H1 , making it possible to connect to the corrugated plate B shown in FIG. Therefore, when covering a large area of the roof, the conventional corrugated sheet A is used for the upper part of the roof, the corrugated sheet B shown in Figure 1 is used for the lower part of the roof, and the corrugated sheet shown in Figure 6 is used for the middle part. Connect the two using plate B'.
In the upper part of the roof, the amount of water flowing down is small, and even if the conventional corrugated plate A is used, water will not leak from the width direction connection part A.
Furthermore, even if the amount of water flowing down is large in the lower part of the roof, the drainage capacity of the connection part A is large, and water will not leak from the connection part A. Therefore, compared to the case where the entire roof is constructed using the corrugated sheet B shown in FIG. 1, the cost can be reduced and there is no risk of water leakage.

(Effect of the invention) According to the corrugated plate mounting structure according to the invention described above,
Even if it rains so much that rainwater overflows the valleys in the middle part of the corrugated plate in the width direction, the valleys in the overlap joints can drain the rainwater with enough margin, and Since rainwater is less likely to overflow into the troughs of the joints, the overlap joints are less likely to be filled with rainwater, and as a result, water leakage from between the bottoms of the overlap joints is prevented. It also has the effect of allowing the installation spacing of the main building materials to be wider than before.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway side view of a corrugated plate according to an embodiment of the present invention, Fig. 2 is an enlarged side view showing the overlapping joint when the above corrugated plate is added and constructed, and Fig. 3 is a modified example of the corrugated plate. 4 is a partially cutaway side view showing another modification of the corrugated sheet, FIG. 5 is a partially cutaway side view showing another modification of the corrugated sheet, and FIG. 6 is a partly cutaway side view showing another modification of the corrugated sheet. FIG. 7 is a perspective view showing still another modified example of the board, and an enlarged side view showing an overlapping joint portion when a conventional corrugated board is added. B, B′...Corrugated plate, H ₁ , H ₂ ...Depth of valley, I...
...Overlapping connection part, 12, 12a, 12b...trough part,
X-X...Virtual plane.

Claims (1)

[Scope of utility model registration request] The depth of the valley at both ends in the width direction is deeper than the depth of the valley at the middle part, and the lowest points of the valleys at both ends and the middle part are on the same level so that they are located on a common virtual plane. A mounting structure for a corrugated sheet, characterized in that the lowest point of the valley in the corrugated sheet is supported by a purlin material.